/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.netbeans.lib.profiler.charts.axis;

/**
 *
 * @author Jiri Sedlacek
 */
public class DecimalAxisUtils {

    public static final long[] decimalUnitsGrid = new long[] { 1, 2, 5 };

    public static long getDecimalUnits(double scale, int minDistance) {
        if (Double.isNaN(scale) || scale == Double.POSITIVE_INFINITY || scale <= 0) return -1;

        long decimalFactor = 1;

        while (true) {
            for (int i = 0; i < decimalUnitsGrid.length; i++)
                if ((decimalUnitsGrid[i] * scale * decimalFactor) >= minDistance)
                    return decimalUnitsGrid[i] * decimalFactor;

            decimalFactor *= 10;
        }
    }

}
